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QUARTERLY FINANCIAL DATA (Tables)
 12 Months Ended
Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Data
The following is a summary of the quarterly results of the Company for the years ended December 31, 2016 and 2015 (unaudited, in thousands, except for per share data):
 
Three Months Ended
 
Year Ended
 
3/31/16
 
6/30/16
 
9/30/16
 
12/31/16
 
December 31, 2016
Operating Loss
$
(22,118
)
  
$
(22,227
)
  
$
(19,581
)
  
$
(19,853
)
  
$
(83,779
)
Net loss
(21,914
)
 
(22,061
)
 
(19,421
)
 
(19,722
)
 
(83,118
)
Per common share:
 
 
 
 
 
 
 
 
 
Loss per share, basic and diluted (1)
$
(1.13
)
 
$
(1.11
)
 
$
(0.97
)
 
$
(0.99
)
 
$
(4.20
)
 

Three Months Ended
 
Year Ended
 
3/31/15
 
6/30/15
 
9/30/15
 
12/31/15
 
December 31, 2015
Operating Loss
$
(11,986
)
  
$
(15,516
)
  
$
(18,724
)
  
$
(18,488
)
  
$
(64,714
)
Net loss
(11,940
)
 
(15,446
)
 
(18,741
)
 
(18,417
)
 
(64,544
)
Per common share:
 
 
 
 
 
 
 
 
 
Loss per share, basic and diluted(1)
$
(0.77
)
 
$
(0.95
)
 
$
(1.11
)
 
$
(0.96
)
 
$
(3.82
)


(1) Net loss per share is computed independently for each of the quarters presented. Therefore, the sum of the quarterly per-share calculations will not necessarily equal the annual per share calculation.